Do what is best for you, let others do what is best for them.
I find that all types of people can be super annoying when on a "diet". They often want to preach their respective gospel on why there diet is right and others diet are wrong. Myself? Who cares? If someone thinks my diet is strange, who cares? If I think their diet is crazy, who cares?
To each their own. That said, i do like to take in information from people who are "anti-primal". Sometimes they have some good thoughts and studies.